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Table 2 Spearman rank correlation coefficients among COBRA, PHQ-9, and WLQ-8 scores (N = 476)

From: Associations between the depressive symptoms, subjective cognitive function, and presenteeism of Japanese adult workers: a cross-sectional survey study

 COBRAPHQ-9
PHQ-9.407**
WLQ-8 Time management.399**.358**
WLQ-8 Physical activities.222**.174**
WLQ-8 Mental-interpersonal activities.431**.382**
WLQ-8 Output activities.409**.307**
WLQ-8 Index.470**.399**
WLQ-8 Productivity loss.470**.399**
  1. COBRA Cognitive Complaints in Bipolar Disorder Rating Assessment; PHQ-9 Patient Health Questionnaire-9; WLQ-8 Work Limitations Questionnaire; **p < 0.01 (two-sided)